The Folsom Site Is Important in the History of American

The Folsom site is important in the history of American archaeology because:

A) it was the first site that was excavated using the stratigraphic method, a breakthrough in archaeological technique that allowed for chronological control.
B) it finally disproved the Myth of the Moundbuilders, establishing that Native Americans had indeed built the earthworks of the eastern United States.
C) it proved the extent of human antiquity in the Americas.
D) at a time when most American archaeologists were concentrating on American prehistory, it demonstrated the importance of historic archaeology.